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公开(公告)号：US10375503B2
公开(公告)日：2019-08-06
申请号：US15786278
申请日：2017-10-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Michael Buerger , Heinrich Löllmann , Walter Kellermann , Peter Grosche , Yue Lang
Abstract: A wave field synthesis apparatus for driving an array of loudspeakers with drive signals, the apparatus includes a sound field synthesizer for generating sound field drive signals for causing the array of loudspeakers to generate one or more sound fields at one or more audio zones, a binaural renderer for generating binaural drive signals for causing the array of loud-speakers to generate specified sound pressures at at least two positions, wherein the at least two positions are determined based on a detected position and/or orientation of a listener, and a decision unit for deciding whether to generate the drive signals using the sound field synthesizer or using the binaural renderer.
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公开(公告)号：US10284993B2
公开(公告)日：2019-05-07
申请号：US15722637
申请日：2017-10-02
Inventor： Michael Buerger , Heinrich Löllmann , Walter Kellermann , Karim Helwani , Peter Grosche , Yue Lang
Abstract: A local wave field synthesis apparatus, which includes a determination module for determining desired sound pressures and desired particle velocity vectors at a plurality of control points, a computation module for computing sound pressures and particle velocity vectors at the plurality of control points based on a set of filter parameters, an optimization module for computing an optimum set of filter parameters by jointly optimizing computed sound pressures towards the desired sound pressures and computed particle velocity vectors towards the desired particle velocity vectors, and a generator module for generating the drive signals based on the optimum set of filter parameters, wherein the plurality of control points are located on one or more contours around the one or more audio zones.
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